2 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
3 * See the copyright notice in the ACK home directory, in the file "Copyright".
5 /* $Id: strerror.c,v 1.4 1994/06/24 11:56:55 ceriel Exp $ */
10 * I don't know why, but X3J11 says that strerror() should be in declared
11 * in <string.h>. That is why the function is defined here.
14 strerror(register int errnum)
16 extern const char *_sys_errlist[];
17 extern const int _sys_nerr;
19 if (errnum < 0 || errnum >= _sys_nerr)
20 return "unknown error";
21 return (char *)_sys_errlist[errnum];